How do I turn off the sleep mode for the HV-KB558CM keyboard? kb558cmYingjie Zhang3月 26, 2021 Share Unfortunately the sleep feature cannot be turned off. Tags: Kb558cm Share Previous articleNext article Subscribe to Newsletters And receive HAVIT's latest news and deals Your email Subscribe100% free, Unsubscribe any time! Follow us Featured products Gamenote MS963WB Tri-Mode Gaming Mouse Sale price$64.00 SGD HAVIT KB875L RGB Backlit Mechanical Gaming Keyboard Sale price$134.00 SGD HAVIT H655BT PRO ANC Wireless Over Ear Noise Cancelling Headphones Black +3 Beige +2 Blue +1 Sale price$110.00 SGD Regular price$124.00 SGD